Referendum on the voting system for UK parliamentary elections results

The referendum, held on 5 May 2011, produced a No vote for the proposition in all three Highland constituencies:

At present, the UK uses the first-past-the-post system to elect MPs to the House of Commons. Should the alternative vote system be used instead?

Caithness, Sutherland and Ross Constituency

Results Ballots
Yes 10,364
No 17,848
Total Valid Ballots 28,422

Rejected at Count Stage Ballots
Unmarked or void for uncertainty 194 
Voting for more than one option 14 
Want of Official mark
Writing or mark identifying voter
Total Rejected at Count 210 

Percentage poll - 52.17%  

Skye, Lochaber and Badenoch Constituency

Results Ballots
Yes 12,490
No 18,937
Total Valid Ballots 31,696

Rejected at Count Stage Ballots
Unmarked or void for uncertainty 261 
Voting for more than one option
Want of Official mark
Writing or mark identifying voter
Total Rejected at Count 269 

Percentage poll - 56.59%

Inverness and Nairn Constituency

Results Ballots
Yes 11,653
No 20,415
Total Valid Ballots 32,270

Rejected at Count Stage Ballots
Unmarked or void for uncertainty 199 
Voting for more than one option
Want of Official mark
Writing or mark identifying voter
Total Rejected at Count 204 

Percentage poll - 53.21%

Referendum electorates

Constituency Electorate
Caithness, Sutherland and Ross 54,470
Skye, Lochaber and Badenoch 56,009
Inverness and Nairn 60,651
Total 171,130